# Hypothesis Testing on Population Proportion Wk5S2

## Quiz by Queeny Joyce Sebastian

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7 questions
• Q1

A survey conducted last year by the barangay health workers showed that 20% of the students smoked. This year, a new survey is conducted on 150 students selected randomly from the same school. It was found out that 35 of them smoke. Test if the claim has decreased at α = 0.01 level. Formulate the correct alternative hypothesis.

Ho: p < 0.20

Ha: p = 0.20

Ha: p < 0.20

Ho: p ≠ 0.20

30s
• Q2

In testing hypothesis involving population proportion, when do we say that the sample size (n) is sufficiently large?

if n/p<5, n/q<5

if n>30

if n<100

if np>5, nq>5

30s
• Q3

It is a part of the population with a particular trait expressed in decimal, percent, or fraction.

Population Proportion

Sample Proportion

Sample

Proportion

30s
• Q4

Twenty-eight percent (28%) of all Masagana High School students believe that Monday will be a rainy day. You take a sample of 50 students and find that 15 of them believe Monday will be a rainy day. What does 50 represent?

p

p hat

x

n

30s
• Q5

In testing hypothesis involving population proportion, which of the following is appropriate to use?

t-test

x-test

p-test

z-test

30s
• Q6

If the value of p is 0.45, what is the value of q?

0.54

0.55

0.45

0.46

30s
• Q7

A new proposition on a ballot wants to know whether it is likely to pass upon obtaining more than 50% of the vote. A poll is taken and 571 out of 1,000 people support the proposition. What is the value of the test statistic?

4.10

2.37

3.46

4.49

120s

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